It is better to err on the price than in the product. John D. Rockefeller.
Advantages of tungsten round
Wolfram — the most refractory metal, so a tungsten circle has excellent heat resistance and heat resistance. It has excellent mechanical properties: abrasion resistance, hardness strong heating and the lowest coefficient of thermal expansion among the metals. In terms of tungsten good thermal conductivity, very high creep resistance temperature and very high elasticity modulus. It is resistant to korrazii, alkalis and acids, including concentrated hydrochloric, sulfuric and nitric acids, aqua regia. Tungsten round produced the most responsible and highly reliable parts.
The main drawback is considered to be high cost. Tungsten is a rare metal, its quite difficult to isolate in pure form, he refractory and cranky during processing. tungsten is not enough plastic at ambient temperatures. In addition, it is very heavy, like gold.
First, the method of making powder metallurgy preform. Technological ductility of tungsten is small, but with increasing temperature are improved without loss of strength. Therefore, tungsten circle get hot processing under pressure. It uses special means of heat treatment and advanced chemical protection technologies, as incandescent tungsten easily interact with atmospheric gases. The workpiece is shaped by hot rolling, drawing or pressing, in accordance with GOST 25 501−82. Tungsten circles of various purpose (BPH) and the brand VA, with additives of silicon and aluminum, are produced with a diameter of 1−10 mm. production quality is controlled at all stages.
Thin tungsten circles Ø 1,6; 2; 3; 4 mm irreplaceable as a consumable electrode arc welding; in electronic and electrical industry — for a special type of contacts, soldered into the glass through which current flows in the electronic devices. Depending on the diameter, surface condition and brands of further circles are produced in a directly heated cathode ion sources of ion implantation systems and various types of heaters, such as in glass melting for producing electrodes and the stirrer-hot glass.
|Type of electrode||Colour||Current||applications||Welding properties|
|WL15 — plus GOLD (1,5% La 2 O 3)||Golden||AC / DC||Stainless steel, low alloyed and alloyed steels. Alloys of aluminum, magnesium, titanium, nickel, copper.||Very good properties of ignition and re-ignition. Arc stability. Long service life. suitable as a replacement WT20|
|WL20 (2% La 2 O 3)||Blue||AC / DC at a high amperage||Stainless steel, low alloyed and alloyed steels. Alloys of aluminum, magnesium, titanium, nickel, copper.||Very good properties of ignition and re-ignition. Arc stability. Long service life. suitable as a replacement WT20|
|WC20 (2% cerium oxide)||Gray||AC / DC low amperage current||Stainless steel, low alloyed and alloyed steels. Alloys of aluminum, magnesium, titanium, nickel, copper.||Very good properties of ignition and re-ignition. Arc stability. Long service life. suitable as a replacement WT20|
|W 100% tungsten||Green||AS||Alloys of aluminum, magnesium.||Worse ignition and reignition than doped electrodes. Arc stability.|
Buy at the best price
In stock company «Electrovek-steel» is always in the presence of a wide range of high-quality tungsten and tungsten round bar at a price that will satisfy any customer. We offer good conditions for wholesale and retail buyers. If necessary, you advise experienced managers. All products are certified. Quality guaranteed by strict observance of technological norms of production. Deliveries — as soon as possible. For wholesale orders granted preferential discounts.